Now showing items 441-460 of 5601

    Shaping transport infrastructure in Sub-Saharan Africa (1884-2020). The impact of decision-making on network efficiency and sustainability: the case of Cameroon 

    Oliete Josa, Sergio (Date of defense: 2023-07-05)

    (English) The objective of this research is to delve into the decision-making processes that shape the provision of transport infrastructure. To this end, it analyses the historical evolution of transport networks in ...

    Entendiendo los Parques Nacionales como reflejo de nuestra capacidad para vivir en un medio natural. Una mirada a través de la habitabilidad, Parque Torres del Paine 

    Villanueva Retamales, Laura Alicia (Date of defense: 2022-11-22)

    (English) Since last decade, tourism in Chilean Patagonia has grown rapidly, largely promoted by State policies and encouraged by privately held companies, whose objective is to turn this region into a pole of attraction ...

    High-fidelity numerical simulations of reacting flows with tabulated chemistry 

    Both, Ambrus (Date of defense: 2023-06-29)

    (English) In the transition to net-zero carbon emission technologies, turbulent combustion is expected to retain an important role in various applications. In particular, the aviation industry is projected to widely adapt ...

    Environmental impact accounting of organic agricultural production systems: advancing inventory and biodiversity modelling approaches in life cycle assessment 

    Montemayor, Erica Yvonne (Date of defense: 2022-11-24)

    (English) Agriculture not only contributes to more than a quarter of all global greenhouse gas emissions but is also the number one anthropogenic source of nitrogen emissions and a danger to nearly half of threatened ...

    Mathematical programming models to design and analyse efficient and robust raiway freight transport networks 

    Rosell Camps, Francisca (Date of defense: 2022-11-10)

    (English) Searching to achieve an ambitious reduction in greenhouse gas emissions, the European Union has set as a goal a modal shift in freight transport of 30\% by rail or waterborne for the near future. The increasing ...

    Mid-infrared surface sensing based ontTwo-dimensional materials 

    Bareza, Nestor Jr. (Date of defense: 2022-11-07)

    (English) Mid-infrared (mid-IR) spectroscopy in the wavelength region between 2 and 20 µm is a powerful technique to identify vibrational absorption signatures of molecules, finding in this way extensive applications in ...

    Dc-dc converters for HVDC heterogeneous interconnections 

    Gómez Acero, Daniel Hernando (Date of defense: 2022-12-01)

    (English) High voltage direct current (HVDC) technologies have been used for bulk power transmission over long distances since the 1950s. These technologies have proven to be the most cost-efficient compared to the high ...

    Mechanical characterisation of masonry in existing structures by means of laboratory and in-situ experimental techniques 

    Cabané Cañas, Albert (Date of defense: 2023-05-17)

    (English) Masonry structures are among the most abundant construction typologies in the world, having been commonly built until the second half of the 20th century. The determination of the mechanical properties of these ...

    Anàlisi del comportament de bigues de formigó armat reforçades amb FRCM vegetal sota càrregues de flexió cíclica 

    Mendizábal Dinucci, Virginia Dolores (Date of defense: 2023-03-23)

    (English) Fiber-Reinforced Cementitious Matrix (FRCM) is a strengthening method that has been increasing its importance versus Fiber-Reinforced Polymer (FRP) due the lower cost and lower toxicity of its materials. The ...

    Quality of service, security and trustworthiness for network slices 

    Alemany Prats, Pol (Date of defense: 23-03-23)

    (English) The telecommunications' systems are becoming much more intelligent and dynamic due to the expansion of the multiple network types (i.e., wired, wireless, Internet of Things (IoT) and cloud-based networks). Due ...

    Technologies for injection molded antennas for mass production 

    Zhou, Ivan (Date of defense: 2023-01-19)

    (English) The deployment of 5G antenna infrastructure and the mandatory adoption of anti-collision radars for automotive cars will require large amount of antennas operating in the millimeter and sub-millimeter wavelength. ...

    Raman dressed Bose-Einstein condensates with tunable interactions: topological gauge theories and supersolids 

    Chisholm, Craig Sterling (Date of defense: 2023-06-19)

    (English) The exquisite control available in atomic ultracold quantum gases experiments makes them an ideal candidate for quantum simulation of diverse topics ranging from high energy physics and analogue quantum gravity ...

    Síntesi d'alt nivell de circuits asíncrons 

    Badia Sala, Rosa Maria (Date of defense: 1994-07-20)

    (Català) A mesura que augmenta el nombre de transistors integrables en un xip, problemes com el desfasament del senyal de rellotge esdevenen cada cop més crítics. Altres avantatges com un consum més baix, una velocitat ...

    Quantum-enhanced imaging with SPAD array cameras 

    Camphausen, Robin (Date of defense: 2023-04-12)

    (English) Entangled photon pairs can enhance optical imaging capabilities. Phase imaging allows detecting fine detail of transparent samples without potentially invasive fluorescent labelling, and here entanglement enables ...

    Aportaciones a la estabilidad de plantas marinas de generación eléctrica, con volantes de inercia 

    Herrero Sabat, Antonio (Date of defense: 2023-04-17)

    (English) The falls of electrical generation plants on board or Power Blackouts, put in check the safety of the crew, the ships and the environment. Induction motors with a significant power in kW in relation to the kVA ...

    Methodology for seismic vulnerability assessment of existing masonry buildings in urban centres. Application to the Eixample district in Barcelona 

    Dimovska, Sara (Date of defense: 2023-05-26)

    (English) Unreinforced masonry buildings (URM), which prevail in many historic and urban centres, can be considered to be significantly vulnerable to seismic actions due to their peculiar constructive and structural features ...

    Robotic manipulation of cloth: mechanical modeling and perception 

    Coltraro Ianniello, Franco (Date of defense: 2023-03-30)

    (Eng) In this work we study various mathematical problems arising from the robotic manipulation of cloth. First, we develop a locking-free continuous model for the physical simulation of inextensible textiles. We present ...

    La visió de la informàtica en la literatura de ciència ficció 

    Barceló Garcia, Miquel (Date of defense: 1990-09-01)

    (Cat) Aquesta memòria descriu com la literatura de ciència ficció reflecteix en les seves narracions els conceptes i resultats propis de la ciència i la tecnologia informàtica. Aquesta visió cal entendre-la en un sentit ...

    Nuevos interconectores pulvimetalúrgicos para sistemas de óxido sólido de alta temperatura: desarrollo, optimización y prototipado 

    Monterde Gascón, María Carmen (Date of defense: 2023-02-27)

    (English) The transition towards to low carbon energy generation is promoting the installation of renewable energy sources, their successful deployment requires efficient energy storage systems in order to meet demand. ...

    Unidad de instrucciones para la ejecución paralela de los saltos 

    González Colás, Antonio María (Date of defense: 1989-05-12)

    (Español) El presente trabajo se centra en el diseño y evaluación de mecanismos que permitan reducir los conflictos ocasionados por las instrucciones de transferencia de control (saltos) en arquitecturas segmentadas. Las ...